[v6,06/19] dt-bindings: display: imx: Add i.MX8qxp Display Controller command sequencer

Commit Message

Liu Ying Dec. 9, 2024, 3:39 a.m. UTC

i.MX8qxp Display Controller contains a command sequencer is designed to
autonomously process command lists.

Signed-off-by: Liu Ying <[e-mail]>
---
v6:
* No change.

v5:
* No change.

v4:
* Replace "fsl,iram" property with standard "sram" property. (Rob)

v3:
* New patch. (Rob)

 .../imx/fsl,imx8qxp-dc-command-sequencer.yaml | 67 +++++++++++++++++++
 1 file changed, 67 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml

Patch

diff --git a/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml
new file mode 100644
index 000000000000..27118f4c0d28
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml
@@ -0,0 +1,67 @@ 
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/display/imx/fsl,imx8qxp-dc-command-sequencer.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Freescale i.MX8qxp Display Controller Command Sequencer
+
+description: |
+  The Command Sequencer is designed to autonomously process command lists.
+  By that it can load setups into the DC configuration and synchronize to
+  hardware events.  This releases a system's CPU from workload, because it
+  does not need to wait for certain events.  Also it simplifies SW architecture,
+  because no interrupt handlers are required.  Setups are read via AXI bus,
+  while write access to configuration registers occurs directly via an internal
+  bus.  This saves bandwidth for the AXI interconnect and improves the system
+  architecture in terms of safety aspects.
+
+maintainers:
+  - Liu Ying <[e-mail]>
+
+properties:
+  compatible:
+    const: fsl,imx8qxp-dc-command-sequencer
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    maxItems: 1
+
+  interrupts:
+    maxItems: 5
+
+  interrupt-names:
+    items:
+      - const: error
+      - const: sw0
+      - const: sw1
+      - const: sw2
+      - const: sw3
+
+  sram:
+    $ref: /schemas/types.yaml#/definitions/phandle
+    description: phandle pointing to the mmio-sram device node
+
+required:
+  - compatible
+  - reg
+  - clocks
+  - interrupts
+  - interrupt-names
+
+additionalProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/imx8-lpcg.h>
+
+    command-sequencer@56180400 {
+        compatible = "fsl,imx8qxp-dc-command-sequencer";
+        reg = <0x56180400 0x1a4>;
+        clocks = <&dc0_lpcg IMX_LPCG_CLK_5>;
+        interrupt-parent = <&dc0_intc>;
+        interrupts = <36>, <37>, <38>, <39>, <40>;
+        interrupt-names = "error", "sw0", "sw1", "sw2", "sw3";
+    };